mFOLFOX6 is a combination of chemotherapy including oxaliplatin, leucovorin, and 5-FU. The oxaliplatin and leucovorin are given intravenously over 2 hours. The 5-FU is also given intravenously. The participant will get a shot of 5-FU by the infusion nurse and then will be hooked up to a portable pump which will infuse the rest of the 5-FU slowly over the next 46-48 hours. The participant can either disconnect the pump at home, or return to the infusion unit to have it disconnected. The participant, the caregivers and the nurse will discuss the best option for disconnecting the pump and the patient will receive instructions on how to do this at home, if applicable.